It would be interesting to use my laser temperature gauge to measure the
temp in the jet stream vs. the surrounding air. I would theorize (Leo,
correct me please) that the Jet Streams inside these buildings are made up
of very hot air that has risen up one side of the building, from the side
most likely heated by the sun. As the air rises, it has no where to go, so
it moves laterally across the building to the side which is in the shade.
They hot air at the top of the building on the shady side is then allowed
to cool, where it descends. The falling air needs to be replaced by the
rising warm air, which is what sets up the jet stream.
This would also mean that the thermals are not located in the center of the
building (belgrade) but are off to one side or another depending on the
suns location and time of day. This also could be a reason to not allow
"steering into thermals" as one would, in effect, be bringing the plane
from the center to the edge of the dome. I suppose it would be legal to
steer the plane from the edge where the down air is(or just before it) all
the way across and back to the up air.
On Tue, Jul 17, 2012 at 4:32 PM, John Kagan <john_kagan_at_hotmail.com> wrote:
> **
>
>
> --- In Indoor_Construction_at_yahoogroups.com, "John Kagan" <john_kagan_at_...>
> wrote:
> >
> > FWIW, the dome in Belgrade has similar drift at times. It is mild up to
> about 5' from the ceiling, then it is pretty severe (this is aside from the
> four alien abduction suck holes, which is a whole different story).
> >
> > A lot of people quickly banged across the ceiling and then had to steer
> before going into the girders at the side.
> >
> > However, the top flights, including all of Treger's flights that I saw,
> stayed a healthy distance away from the ceiling.
> >
>
> Also, I've experience the "jet stream" at Kibbie, even before the window
> work.
>
>
>
--
BEN SAKS
http://kck.st/KKfQsg
www.bensaks.com
Received on Tue Jul 17 2012 - 13:41:25 CEST